Improvement in heating apparatus



v A FORD. Heating Apparatus.-

No. 209,4?1." Patented- Oct. 29, 1878.

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N.PETERS, PHOTO-LITNOGRAPAER WASHINGTON. 0. 12V

breadth, to contain water.

UNITED STATES PATENT OFFICE.

ALVIN FORD, OF CHICAGO, ILLINOIS.

'IMPROVEMENT IN HEATING APPARATUS.

Specification forming part of Letters Patent No. 209,471, dated October29, 1878; application filed I May 22, 1876.

To all whom it may concern:

Be it known that I, ALVIN FORD, of Ohicago, in the county of Cook andState of Illinois, have invented a new and valuable Improvement inApparatus for the Production of Heat; and I do hereby declare that thefollowing is a full, clear, and exact description of the constructionand operation of the same, reference being had to the annexed drawings,making a part of this specification, and to the letters and figuresmarked thereon.

Figure 1 is a top view of a stove or furnace and steam and water heatercontaining my improved apparatus. Fig. 2 is a side View of the same.Fig. 3 is a sectional view of my fire-chamber and water-reservoir,showing hollow grate-bars, which are a part of the same.

This invention has relation to improvements in apparatus for theproduction of heat; and it consists in the construction and novelarrangements of parts, as will be hereinafter more fully shown anddescribed.

The letter I, Fig. 1, represents the exterior of the fire-chamber of astove or furnace. D represents the bottom of the fire-chamber I, and ishollow throughout its length and E represents the grate-bars of thebottom D, which are also hollow and adapted to contain water. F G Hrepresent a supplementary or interior firechamber and water -reservoirresting on the bottom D aforesaid, which is placed on the fuel containedin an ordinary stove. This fire and water chamber F G H is provided witha damper, K, by means of which the spaces between the grate-bars can beclosed and the draft can be completely or partially cut ofi from thesame. The construction of this reservoir and fire chamber F G H is moreparticularly shown in Fig. 3.

P represents a pipe leading from the hy drant into the hot-water andsteam reservoir M. The letter S represents apipe for the purpose ofsupplying water to the hollow bottom D from the reservoir M and into thefirechambers F G H. R is a steam-pipe opening out of the bottom D intothe reservoir M at a voir M into the steam-heater N. W is an automaticsteam-valve, allowing the steam to escape from the steam-heater N whenthere is a certain pressure. T is a faucet, through which any condensedsteam may atany time be drawn from the steam-heater N. Z is also afaucet, through which hot water may be drawn from the hot-waterreservoir M. The entire exclusion of air from below the firechamber canbe attained by means of the damper K, and fire may be retained in thefirechamber :20 for a considerable length. of time, thus giving aconstant fire for warming or other purposes, and affording, by means ofthe surrounding fire and water reservoir F G H, a constant supply of hotwater, and also largely economizing fuel. I

The supply of water through the hydrantpipe P is regulated by a float inthe reservoir M, which closes a valve, shutting the water off from thehydrant-pipe when the water has reached a certain height in thereservoir.

The steam-radiator N may be placed in any room in the house, warming thesame by means of the steam supplied through the pipe 0 from thereservoir M, the top of which is a steamreservoir, and is supplied withsteam through the pipes R and L directly from the fire and waterreservoir F GE and the bottom D.

I regard as one of the useful features of my combination the hollowgrate-bars E and H, Fig. 1. When containing water no heat can melt orburn away or seriously injure them. This is of great importance when anintense and constant fire is maintained in the grate, especially whenthe grate-bars are entirely surrounded by fire, as is shown in thefire-chamber :10.

I will now describe the operation of my in vention. The fire is kindledin the space between the walls F and bottom G of the interior firechamber and the walls I and bottom D of the stove, and the said chamberF and space between the same are properly filled with fuel. The waterentering the hollow bottom D and: chamber F G H is heated, and by meansof the pipes R and L it circulates through the reservoir M, heating thewater therein and generating steam, which passes through pipe 0 to theheater N. By means of the damper K the draft may be shut off from thefire-box F G H completely or partially, so as to cause the fuel thereinto burnslowly, in order to maintain afire Within for a considerablelength danfper K, with the bottom D, substantially of time, in order tokeep the water heated for as specified.

domestic purposes. 3. The combination of the steam-heater N What Iclaim, and desire to secure by Letwith the reservoir M, the reservoir FG H, and ters Patent, is the bottom D E, substantially as specified.

1. The metal reservoir M, connected with the fire-box F G H and bottom Dby meansof ALVIN FORD pipes S R L, substantially as specified.Witnesses:

2. The combination of the fire and water FREDERICK J. SEYBOLD,

chamber F G H, having hollow grate-bars and ELHANAN J. SEARLE.

